history of asphalt laura ingalls wilder, in a century of progress the history of hot mix asphalt, in the 1930s, sheldon g. hayes was the first to use a barber greene finisher, which consisted of a tractor unit and a screed unit with a vertical tamping bar. barber greene introduced the floating screed a few years later, and its design

An asphalt plant is a machine designed to produce hot-mixed asphalt (HMA). There are two types of plants: batch and drum. There are two types of plants: batch and drum. They both produce the same essential mix, but through different processes.